"FREE SHIPPING on select colors". Soothe pain in back muscles with a heated back wrap. Great to use when you get home from work, a workout at the gym, or just for soothing a sore, achy back. Place behind your back while relaxing in your easy chair. Heat and place in bed to warm before retiring for the night. Heat in a carousel microwave for moist, penetrating heat. Removable inserts are filled with a blend of flax seed and organic herbs/leaf (ie: lavender buds, eucalyptus leaf) then infused with pure essential oil. Ease back and enjoy the aromatherapy along with the warmth of the wrap.